Corrupter of Mind is a hell version of Leviathan boss. They are visually a bit different but still remain same shape.
Gameplay[]
During the fight you will be fight with two of them at same time. Boss bar combines both bosses health together. The boss has same attack patterns as Leviathan and will reveal the same weakspot in the stomach during any attack phases. It can cordinate attack together. Its weakspots are exposed eye in the belly.